TPS5405DR集成电路（IC）的稳压器-DC-DC开关稳压器规格书PDF中文资料

TPS5405DR属于集成电路（IC）的稳压器-DC-DC开关稳压器。由德州仪器制造生产的TPS5405DR稳压器 - DC-DC 开关稳压器DC-DC 开关稳压器 PMIC（电源管理集成电路）产品族中的产品是元器件级设备，用于需要稳定 DC 输入电压和/或将其转换为不同幅度的输出电压的应用。这些器件与称为“控制器”PMIC 的类似产品的区别在于集成了主开关元件，设备提供的电力会通过该元件。

1FEATURES

• Fixed 5-V Output

• 6.5-V to 28-V Wide Input Voltage Range

• Up to 2-A Maximum Continuous Output

Loading Current

• Pulse Skipping Mode to Achieve High Light

Load Efficiency

• Over 80% Efficiency at 10-mA Loading

• Adjustable 50-kHz to 1.1-MHz Switching

Frequency Set by an External Resistor

(Leave pin ROSC floating. Set frequency to

120 kHz)

• Peak Current-Mode Control

• Cycle-by-Cycle Over Current Protection

• Switching Node Anti-Ringing to Ease EMI

Issue

• External Soft Start

• Available in SOIC8 Package

APPLICATIONS

• 9-V, 12-V and 24-V Distributed Power Systems

• Consumer Applications Such as Home

Appliances, Set-Top Boxes, CPE Equipment,

LCD Displays, Peripherals, and Battery

Chargers

• Industrial and Car Entertainment Power

Supplies

DESCRIPTION

The TPS5405 is a monolithic non-synchronous buck regulator with wide operating input voltage range from 6.5 V

to 28 V. Current mode control with internal slope compensation is implemented to reduce component count.

TPS5405 also features a light load pulse skipping mode, which allows for a power loss reduction from the input

power supply to the system at light loading.

The switching frequency of the converters can be set from 50 kHz to 1.1 MHz with an external resistor.

Frequency spread spectrum operation is introduced for EMI reduction.

LX anti-ringing is added to address high frequency EMI issues.

A cycle-by-cycle current limit with frequency fold back protects the IC at over loading condition.